The general trend is that over time, a construction starts out as two words, eventually becomes hyphenated, and finally ends up as one word. I.e., lawn mower becomes lawn-mower becomes lawnmower. Me, I prefer it as two words, but maybe that's because I'm an old fart and resistant to change.
Either the mobile apps or the tool will get you personalized refund information based on the processing of your tax return. They will provide an actual refund date as soon as the IRS processes your tax return and approves your refund. Most refunds will be issued in less than 21 days.
Generally, the IRS sends out their Direct Deposits on THURSDAYS, so that they are credited to the apprpriate accounts by Fridays. There are times when the refund gets sent early, but this is rare. They have deposit cycles. If a return is acknowledged by the IRS by noon on Wednesday, the earliest the refund is expected to be in the taxpayer's account is the Friday 9 days later.